You are trying to say that both calculators only work for some gun profiles?
Real world ballistics calculators will only work if Advanced Ballistics is enabled. The ATragMX can handle both, vanilla- and advanced ballistics. Vanilla Ballistics drag is using the airFriction config entry, Advanced Ballistics drag is using the ballistic coefficient config entry.
Join our public slack channel if you can't get it working.

There is no other way of treating it. Unless you change the module option, like Glowbal suggested here: http://forums.bistudio.com/showthread.php?191716-ACE3-A-collaborative-merger-between-AGM-CSE-and-ACE&p=2954051&viewfull=1#post2954051